I think all my badges came by accident. Although come to think of it, it was weird the other day when I posted that question about eating toxic foods on purpose. It has 13 upvotes, but no nice question badge for it. Odd.
Anyway I just participate in PaleoHacks from all angles. Inquisition, knowledge sharing, topic prodding, encouragement, and a splash of humor. This site is a really great resource.